You can install our site as a web app on your iOS device by utilizing the Add to Home Screen feature in Safari. Please see this thread for more details on this.
Note: This feature may not be available in some browsers.
Certainly the first thing to do is to get a dash cam, even before getting your new car!
I bought an extra windshield mount and an extra power extension cord,
so every time I rent a car, I immediately put my dash cam in the rental car.
This takes less than a minute to do so.